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Wet method polyaminoester (PU) resin produced by waste polyaminoester (PU) resin sole

A technology of wet-process polyurethane and polyurethane, which is applied in the direction of recycling technology, products, reagents, etc., to achieve the effects of saving production costs, reducing production costs, and good economic benefits

Inactive Publication Date: 2006-07-26
SHANGHAI LIANJING MATERIAL ASSETAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, after adopting this process, the recycling problem of waste polyurethane (PU) soles can be well solved, thereby achieving good environmental protection benefits and economic benefits.

Method used

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  • Wet method polyaminoester (PU) resin produced by waste polyaminoester (PU) resin sole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The following are the formulations of wet-process polyurethane (PU) resins:

[0045] (1) the first step: dissolve, obtain intermediate S 1

[0046] Raw material name Proportion (weight parts)

[0047] N,N-Dimethylformamide (DMF) 132

[0048] (Waste) Polyurethane Sole Scrap 101

[0049] Degradant P 1 11.3

[0050] Degradant P 2 0.9

[0051] (2) The second step: product synthesis

[0052] Raw material name Proportion (weight parts)

[0053] Intermediate S 1 220

[0054] Diphenylmethane-4,4'-diisocyanate (MDI) 4.2

[0055] Catalyst 0.03

[0056] Polyol E 1 16.6

[0057] Polyol E 2 28.7

[0058] Chain Extender G 1 31.4

[0059] Diphenylmethane-4,4'-diisocyanate (MDI) 32.5

[0060] N,N-Dimethylformamide (DMF) 383

[0061] The preparation method of the present invention selects an appropriate amount of polyur...

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Abstract

The invention relates to a wet polyurethane (PU) resin produced by waste PU soles, using waste PU soles as raw material to prepare polyurethane (PU) resin, processing, crushing, drying, stirring and dissolving, cooling and filtering to obtain an intermediate S1, then adding in some raw materials to react and supplement MDI, then diluting, finally cooling and filtering to obtain the wet polyurethane (PU) resin. Its process method has the advantages as follows: it adopts waste PU soles as raw material, beneficial to environmental protection, reducing production cost and having good economic benefits. The product has higher peeling strength and solvent resistance, able to meet binding requirements between many materials; and the product also has higher muscle-forming property to reduce the production cost; and can primely save energy sources.

Description

[Technical field] [0001] The invention relates to a wet process polyurethane (PU) resin produced by using waste and old polyurethane (PU) shoe soles, the specific content of which is to use waste and old polyurethane (PU) shoe soles as main raw materials to prepare the polyurethane (PU) resin. [Background technique] [0002] Polyurethane (PU) chemical structure is characterized by the presence of repeating characteristic groups -NH-COO- (urethane group), which improves its own function and is widely used in clothing and sports goods, various household items, automobiles In transport tools and industrial raw materials. In the preparation method of the polyurethane resin in the known technology, the raw materials such as MDI, polyester polyol, polyether polyol, glycol chain extender and solvent are generally used to react. The above preparation method is relatively high in production cost. In contrast, the present invention has the advantage of recycling waste polyurethane (P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/00C08J11/04
CPCY02P20/143Y02W30/62
Inventor 谢国龙范年春
Owner SHANGHAI LIANJING MATERIAL ASSETAB